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(No Model.)-

W. S. SHARPNEOK.

BOOK BREAKER. No. 271,138. Patented Jan.23, 1883.

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JW WWMM UNITE STATES PATENT OFFICE.

WILLIAM S. SHARPNEGK, OF BLAIR, NEBRASKA, ASSIGNOR OF ONE-HALF TO GREEN MAJORS, ()F SAME PLACE.

ROCK-BREAKER.

f SPECIFICATION forming part of Letters Patent No. 271,139, dated January 23, 1883.

Application filed April 20, 1852. (No model.)

To all whom it may concern Be it known that I, WILLIAM S. SHARP- NECK, a citizen of the United States, residing at Blair, in the county of Washington and State of N cbraska, have. invented certain new and useful Improvements in Rock-Breakers; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the to art to which it appertains to make and use the same. reference being had to the accompanying drawings, and to letters or figures of reference marked thereon, which form a part of this specification.

This invention relates to an improvement in that class of machines designed to act on rock and other materials by throwing it with great force against a resisting medium; and the invention consists in the peculiar construction and arrangement of parts hereinafter more fully described and claimed, whereby the machine is fitted to act as a rock-breaker to break up rocks into small pieces suitable for treatment in the centrifugal rock-pulverizer patented to me April 4, 1882, No. 255,890.

In the drawings, Figure 1 represents a sectional elevation; Fig. 2, a horizontal section through the line as w in Fig. 1; and Figs. 3 and 4are detail views of sections of the breakge ing-ring.

, A represents the base, from which rises the standard B, which may be made in any convenient form, and may be cast with the base or separate, as desired. At the upper part of this standard is a plate, 0, forming the lower part of the casing and acting as the support for the cylinder D and disk E, which are all attached firmly together by the bolts F and nuts G. Within this case is set the breaker H, consisting in this instance of a series of chilled-iron sections, 1, of the shape shown in Figs. 3 and 4, having flauges't' at top and bottom to fit in grooves in the top and bottom plates, J J, of the breaker, in which they are securely held by the bolts K. The flangest' of the sections I project beyond the sections proper, as shown in Figs. 3 and Act the drawings, so as to keep the sections a proper distance apart when they are secured in place. The bottom plate, J, is securely fastened upon the top of a tubular shaft, L, running in bearings formed in the plate 0 and around the central shaft, M, which is stepped in the base A. On the upper end of this shaft M is secured a casting, which may consist of three or more hollow .curved arms, N, as shown inFig. 2; or it may have only two arms, one of which should occupy the position represented in dotted lines in the same figure, so as to be exactly opposite another arm, or the arms may be straight, as shown in Fig. 1. At thejunction of these arms is a hopper, 0, which, however, may, if preferred, be cast with or attached to the disk E. Attached to the tubular and central shafts are pulleys l? P, around which it is intended to pass belts from some prime mover, which belts should be arranged to run the arms N and breaker H in opposite directions, as shown by the arrows; but any other convenient means of driving the machine maybe adopted at the choice of the constructor. The sections 1 are so made as to leave small passages between them, and the plate J is perforated to allow the material to pass through. The sections I may be cast in single pieces, as shown, or several may be cast together, as desired.

Beneath the arms N are cast ribs R, which project downward nearly in contact with the ,plate J, so as to strike any pieces of rock that may not be broken small enough to pass through the holes in the plate J, and, throw them outward to be broken smaller. The lower outer edge of the hub of the plate J is extended downward to make a cap to cover the bearing and protect it from dust, 800., as shown at S in Fig. 1, and there is a horseshoeshaped rib, T. projecting up from the surface of the plate (3 and partially surrounding the cap, to deflect the broken stone away from the cap and bearing.

When in operation the rock is first broken to a size that will readily pass through the hollow arms, and is then fed in through the hopper at the top, and as the arms rapidly rotate each piece is thrown by centrifugal force 9 5 against the breaker H, by which it is broken up into small pieces, and the effect of the blow is much increased by the rapid rotation of said breaker, the projections of which strike the pieces of rock blows in another direction from I that in which the rock is traveling, by which the rocks receive not only the force of the con- 2 Y arm as.

cussiou due to the centrifugal force, but also I more hollow arms leading from said central that due to the blows given by the rotation of the breaker, by which means the rock is broken into smaller pieces, suitable for pulverization by my machine patented April 4:, 1882, before referred to, or by any pulverizingnnachine. As the breaker rotates, if it is run with great speed, it throws out the broken pieces through the openings between its sections into the case,-

and they fall on the plate but if the breaker is stationary or run at low speed, so as not to generate sut'ficient centrifugal force to throw out the broken stone, thepieces willdrop down through the apertures in the plate J onto the plate 0, and, sliding down it, pass out at the spout I. Should any of the stones rebound from the breaker, they will be struck by the arms N or the ribs R, and again thrown with great violence against the breakers; and be thus broken; If any of the stones lodge in an 1 unbroken condition between the sections, they would be broken by the blows of the succeeding pieces hurled against them by the revolving arms. I

Ifsufficient power cannot be had, motion may be given to the center shaftand armsonly, and the breaker may be held stationary, in which case the rocks will be broken by the concussion due to centrifugal force only, and although 3 so much work cannot ,be done in this manner, yet a large amount can be done, and where, as is frequently the case, water-power is employed and the water runs low, this will be found to be a very convenient way ot'operatin What I claim as new is-- 1. In a rock-breaker, the combination, with the casing thereof and the revolving thrower N, havingone or more hollow arms, ofa breaker having sections projecting inwardly at an angle to the thrower-arms, vertical shafts capable of being rotated in opposite directions tor .supporting and carrying the thrower and breaker, and a hopper opening atitslower end directly into the interior of the thrower, substautially as described.

2. In arock-breaker, thethrowcrN, provided with a central opening, and having one or opening, in combination with a breaker having inward projections at an angle to the throwerarms, and a hopper opening at its lower end into the central opening of the thrower, substantially as described.

3. In a rock-breaker, the combination with the casing thereof, of the perforated plate J and the revolvingthrower-arms N,having ribs R, substan ti all yas and for the purpose specified.

4. In a rock-breaker, the combination, with the thrower and breaker, of the casing containing the same, the inclined bottom (J and chute T of said casing, and the rib T on the inclined bottom for the purpose of preventing the broken rock sliding'down thebottom from striking against and getting into the bearings of the breaker, substantially as described.

5. In a rock-breaker, the combination, with the casing thereof, of the revolvingthrowerarms N and a revolving breaker having inward and angularly-prqjecting sections and a perforated bottom, substantially as and for the purpose specified.

6. In a rock-breaker, the combination, with the casing and thrower thereof, of the plates ll J, having circular recesses, and the sections I, having flanges i to tit in said recesses, said flanges being of sufficient length to keep the sections at the proper distance apart, substantially as described.

7. In a rock-breaker, the combination of the vertical shaft M, the thrower-arms N, and hopper 0, carried by said shaft, the hollow shalt L, surrounding the shaft N, the revolving breaker carried on the shaft L, and the casing B, provided with a bearing for the shaft L, an inclined bottom, 0, and a spout, '1", all constructed and operating substantially as herein shown and described.

In testimony whereot'l at'tix my signature in presence of two witnesses.

\VlLLlAM S. SHARPNECK.

Witnesses:

J. B. Jonas, MILTON J. S'r/uu. 

